Objectiveto investigate the differential expression of intestinal flora and serum metabolites and potential biomarkers in patients with pre-diabetic sputum syndrome. MethodA total of 34 patients with pre-diabetic sputum syndrome were included as the phlegm syndrome group，and 37 healthy people were selected as the normal group. Serum and fecal samples of the two groups were collected，and liquid chromatography-mass spectrometry （LC-MS） non-targeted metabolomics and 16S rRNA high-throughput sequencing technology were used to detect serum metabolites and different intestinal flora of the two groups and explore the relationship among pre-diabetic sputum syndrome，serum metabolites，and intestinal flora. ResultIn the distribution of disease syndrome elements in the phlegm syndrome group，the first five disease syndrome elements in terms of frequency and proportion were dampness （73.53%），Qi stagnation （58.82%），Yin deficiency （50.00%），blood stasis （41.18%），and heat （35.29%）. According to the frequency and proportion of disease location syndrome elements，the first three main disease location syndrome elements were spleen （100.00%），liver （41.18%），and kidney （23.53%）. The results of 16S rRNA high-throughput sequencing showed that there were 44 different intestinal flora between the two groups. In order genus，there were significant differences in Bifidobacterium，Veillonococcus，and Roseococcus between the two groups （P<0.05）. The diversity，abundance，and evenness of intestinal flora in the phlegm syndrome group were lower than those in the normal group，with the difference not statistically significant. There was no significant difference in the community structure between two groups. The results of serum metabolomics showed that there were 13 differential metabolites in the two groups，which were mainly concentrated in amino acid metabolism，bile secretion，bile acid biosynthesis，and lipid metabolism （P<0.05）. The correlation among differential metabolites，intestinal flora，and syndrome elements was analyzed，and the results showed that ① lysine was positively correlated with spleen，Yin deficiency，and blood stasis，while taurocholic acid was positively correlated with liver，kidney，blood stasis，and dampness，and there was a positive correlation between taurocholic acid and yin deficiency and heat. The taurochenodeoxycholic acid was positively correlated with liver and dampness，and there was a negative correlation between arachidonic acid and dampness，as well as a positive correlation between glucose and spleen and blood stasis. ② Clostridium was positively correlated with spleen，kidney，Yin deficiency，and Qi stagnation. Rosepiella was negatively correlated with spleen，and Sutterella was negatively correlated with dampness. Bacteroides was negatively correlated with the spleen and kidney，and Bifidobacterium was negatively correlated with the spleen and dampness. ③ Bifidobacterium was positively correlated with glycine，threonine，lysine，and deoxycholic acid significantly，negatively correlated with cholic acid significantly，and positively correlated with taurochenodeoxycholic acid and pyruvic acid. Clostridium was positively correlated with glycine significantly and positively correlated with threonine and lysine. Lachnospira was negatively correlated with glycine，threonine，and pyruvic acid. Lysine was also negatively correlated with Faecalibacterium and Eubacterium ventriosum and positively correlated with Megamonas. There was a positive correlation between taurocholic acid and glycine bile acid and Campylobacter，between taurochenodeoxycholic acid and Veillonococcus，and between glucose and Rosepiella and Eubacterium ventriosum. There was a negative correlation between pyruvic acid and Escheria-Shigella and between taurochenodeoxycholic acid and Prevotella. Conclusionthere are differences in intestinal flora and serum metabolites between patients with pre-diabetic sputum syndrome and healthy people. The intestinal flora and metabolites have been disturbed in the stage of pre-diabetes，Bifidobacterium，Clostridium，Lachnospira，glycine，threonine，and lysine may be the breakthrough to explore the development of pre-diabetic sputum syndrome.

Objective To compare the efficacy of anterior-posterior and posterior-anterior screw fixation for posterior malleolar fractures surgery.Methods A retrospective analysis of 376 cases of posterior malleolar fractures treated with lag screws from January 2011 to October 2022 with more than 12 months of follow-up period was conducted.The patients were divided into two subgroups based on the thickness of the fracture fragment,with 167 cases in the small fracture subgroup having a fracture fragment thickness＜17 mm(screw thread length)and 209 cases in the large fracture subgroup having a fracture fragment thickness ≥ 17 mm.Each subgroup was further divided into anterior-posterior and posterior-anterior groups based on the direction of screw fixation in the posterior malleolar fracture surgery.In the small fracture subgroups,there were 74 cases in the anterior-posterior group and 93 cases in the posterior-anterior group.In the large fracture subgroup,there were 88 cases in the anterior-posterior group and 121 cases in the posterior-anterior group.The American Orthopaedic Foot and Ankle Society(AOFAS)ankle-hindfoot score was measured at the last follow-up.The displacement of the fracture fragment in the direction of the fracture line(Dn)and perpendicular to the fracture line(Dt)were measured on the first day after surgery and at the last follow-up,and the displacement of the fracture fragment was calculated,which was the difference between Dn+Dt at the last follow-up and Dn+Dt on the first day after surgery.Results On the first day after surgery,X-ray showed no significant difference in Dn and Dt between the anterior-posterior and posterior-anterior groups in both of the small and large fracture subgroups(P＞0.05).The entire group was followed up for 12-85 months,with an average of 19.3 months.In the small fracture subgroup,the displacement of the fracture fragment in the posterior-anterior group[(0.11±0.19)mm]was superior to that in the anterior-posterior group[(0.19±0.21)mm;P=0.011],and the AOFAS score was also superior to that in the anterior-posterior group[(80.2±8.4)points vs.(76.2±8.6)points,P=0.003].In the large fracture subgroup,there was no significant difference in fracture displacement between the posterior-anterior group[(0.11±0.18)mm]and the anterior-posterior group[(0.12±0.19)mm;P=0.630],and there was also no significant difference in AOFAS scores[(84.1±7.8)points vs.(82.8±7.6)points,P=0.246].Conclusions There is no significant difference in the reduction effect between anterior-posterior and posterior-anterior lag screw internal fixation for posterior malleolar fractures in trimalleolar fractures.For patients with fracture thickness＜17 mm,posterior-anterior fixation is superior to anterior-posterior fixation;for patients with fracture thickness ≥17 mm,there is no significant difference in the efficacy between anterior-posterior and posterior-anterior fixation.

Objective To investigate the antimicrobial susceptibility of clinical isolates of Corynebacterium striatum and the clinical characteristics of the patients infected or colonized with these strains.Methods The C.striatum strains isolated from clinical specimens were collected in Quanzhou First Hospital Affiliated to Fujian Medical University from July 2020 to September 2022.The clinical data were analyzed to examine the clinical characteristics of patients with C.striatum colonization or infection.The susceptibility of these strains to 18 antimicrobial agents were tested by broth microdilution method.The gyrA gene related to quinolone resistance determining region was amplified and sequenced to analyze the position of amino acid mutations.The ribosomal methylase gene ermX and aminoglycoside enzyme gene aphA1 were amplified by PCR and sequenced.Results Antimicrobial susceptibility testing indicated that all of the 72 strains were susceptible to vancomycin,linezolid and daptomycin.All stains were resistant to ceftriaxone,ciprofloxacin and moxifloxacin.The C.striatum strains showed high resistance rate to penicillin(87.5％),cefepime(95.8％),meropenem(95.8％),trimethoprim-sulfamethoxazole(90.3％),erythromycin(98.6％)and clindamycin(98.6％),but relatively lower resistance rate to gentamycin(25.0％),tetracycline(30.6％)and rifampicin(23.6％).Sequencing analysis indicated that 3 strains of C.striatum had single mutation of gyrA gene(Ser87Val),67 strains had double mutations(Ser87Phe,Asp91Ala or Ser87Tyr,Asp91Ala)and 2 strains had three point mutations(Ser87Phe,Ala88Pro and Asp91 Ala),which was newly identified in this study.The ermXgene was detected in all of the isolates and the prevalence of aphA1 gene was 43.1％.The 72 strains of C.striatum were mainly isolated from ICU(65.2％)and lower respiratory tract specimen(91.6％).The average age of patients was 68.0±15.3 years old.About 72.2％(52/72)of the C.striatum strains were isolated from the patients with infection and 27.8％(20/72)were colonizers.Compared to the patients colonized with C.striatum,the patients with C.striatum infection had statistically significant higher percentages of hospital stay ≥ 28 days,cerebral hemorrhage,disturbance of consciousness and disease deterioration(P＜0.05).Conclusions All of the 72 C.striatum isolates were multidrug resistant,and the outcome of patients with C.striatum infection was relatively poor.

With rapid development of information technology,blended teaching model has gradually become mainstream teaching model in most colleges and universities.How to evaluate students'learning effect and analyze factors that affect students'per-formance is a key research direction of this teaching model.Taking blended teaching of Medical Immunology course in Xinxiang Medical University as an example,this paper introduces implementation process and evaluation system of blended teaching,analyzes main factors affecting students'performance and learning effect,and focuses on discussing influence of formative evaluation and"flipped classroom"on students'academic performance.

Objective To investigate the expression and clinical significance of circular RNA(circRNA)051778 in lung adenocarcinoma-malignant pleural effusion(LA-MPE)and tuberculous pleural effusion(TPE).Methods This is a cross-sectional study.A total of 212 patients were recruited from the Jiangxi Chest Hospital between October 2018 and September 2019,and their pleural effusion samples and/or plasma samples were collected.The exosomal circRNA profile was sketched by circRNA microarray.Differentially expressed circRNAs(DECs)were verified by droplet digital PCR.In addition,a putative circRNA-miRNA-mRNA network was constructed,and Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway analyses were performed to predict the functions of the DECs.The diagnostic value of circRNA_051778 was evaluated by binary logistic regression and receiver operating characteristic curve.Results The expression level of circRNA_051778 in the LA-MPE samples was(3.92±0.48)copies/100 ng cDNA,while that in the TPE samples was(21.53±2.22)copies/100 ng cDNA.Compared to that in the TPE samples,circRNA_051778 was significantly downregulated in the LA-MPE samples(P＜0.001).The potential targets of circRNA_051778 were enriched in positive regulation of GTPase activity,cytoplasm,protein binding,and cancer-related pathways.The area under the curve(AUC)for the combined assessment of circRNA_051778 with liquid-based thin-layer cytology(TCT),erythrocyte sedimentation rate(ESR),and tuberculosis antibody(TBA)was 0.98(95％confidence interval:0.97-1.00),with the sensitivity being 88.0％and the specificity being 100.0％.Conclusion Exosomal circRNA_051778 is downregulated in LA-MPE.According to the findings from the GO and KEGG analyses,exosomal circRNA_051778 may play a role in cancer development and has the potential to serve as a marker for differential diagnostic of LA-MPE and TPE when it is used in combination with TCT,ESR,and TBA.

Objective:To observe the efficacy the application of endoscope assisted temporoparietal fascia flap harvest for the second-stage operation in auricular reconstruction of Nagata’s technique for microtia.Method:In this retrospective study, the clinical data were collected from the patients who received microtia reconstruction with autologous rib cartilage at the Department of Burns and Plastic Surgery, General Hospital of Northern Theater Command from January 2015 to January 2022. According to the surgical procedure, patients were divided into endoscopic group and open surgery group. In endoscopic group, endoscope-assisted temporoparietal fascia harvest were performed for the second-stage operation in auricular reconstruction of Nagata’s technique. In open surgery group, temporoparietal fascia flaps were harvested in open surgery for the second-stage operation in auricular reconstruction of Nagata’s technique. Regular follow-up was conducted to observe the survival of the fascia flaps, complications, patient satisfaction, and surgical scars. The patient satisfaction questionnaire for auricular reconstruction was used to assess patient satisfaction, and the patient and observer scar assessment scale (POSAS) was used to evaluate scar formation in the surgical area. Data analysis was performed using SPSS 26.0 statistical software. The measurement data were expressed by Mean ± SD, and the counting data were expressed as cases (%). The T-test was used to compare the age difference, length of hospital stay, intraoperative blood loss, scar length, patient satisfaction, and POSAS scores between the two groups. Chi-square test was used to compare the gender composition and incidence of complications between the two groups. P<0.05 was considered statistically significant. Results:A total of 51 patients were included, with 26 in the endoscopic group (14 men and 12 women) and 25 in the open surgery group (12 men and 13 women). The age of the patients in the endoscopic group was (9.8±2.9) years (ranging from 7 to 17 years), while in the open surgery group was (10.3±3.8) years (ranging from 7 to 17 years). The postoperative follow-up period was (15.4±3.4) months (1 to 2 years), and all fascia flaps survived without any severe complications. There were no statistically significant differences between the two groups in terms of age difference, length of hospital stay, intraoperative blood loss, postoperative satisfaction, sex composition ratio, and postoperative complications ( P>0.05). The scar quality in the endoscopy group was superior to that in the open surgery group, and POSAS scores of endoscopic group were lower than those in the open surgery group, and the difference was statistically significant ( P<0.05). Conclusion:Endoscope assisted temporoparietal fascia flap harvest for the second-stage operation in auricular reconstruction of Nagata’s technique for microtia can minimize scarring, improve the postoperative appearance and is not statistically associated with the appearance of reconstructed auricles or complications.

Objective:To observe the efficacy the application of endoscope assisted temporoparietal fascia flap harvest for the second-stage operation in auricular reconstruction of Nagata’s technique for microtia.Method:In this retrospective study, the clinical data were collected from the patients who received microtia reconstruction with autologous rib cartilage at the Department of Burns and Plastic Surgery, General Hospital of Northern Theater Command from January 2015 to January 2022. According to the surgical procedure, patients were divided into endoscopic group and open surgery group. In endoscopic group, endoscope-assisted temporoparietal fascia harvest were performed for the second-stage operation in auricular reconstruction of Nagata’s technique. In open surgery group, temporoparietal fascia flaps were harvested in open surgery for the second-stage operation in auricular reconstruction of Nagata’s technique. Regular follow-up was conducted to observe the survival of the fascia flaps, complications, patient satisfaction, and surgical scars. The patient satisfaction questionnaire for auricular reconstruction was used to assess patient satisfaction, and the patient and observer scar assessment scale (POSAS) was used to evaluate scar formation in the surgical area. Data analysis was performed using SPSS 26.0 statistical software. The measurement data were expressed by Mean ± SD, and the counting data were expressed as cases (%). The T-test was used to compare the age difference, length of hospital stay, intraoperative blood loss, scar length, patient satisfaction, and POSAS scores between the two groups. Chi-square test was used to compare the gender composition and incidence of complications between the two groups. P<0.05 was considered statistically significant. Results:A total of 51 patients were included, with 26 in the endoscopic group (14 men and 12 women) and 25 in the open surgery group (12 men and 13 women). The age of the patients in the endoscopic group was (9.8±2.9) years (ranging from 7 to 17 years), while in the open surgery group was (10.3±3.8) years (ranging from 7 to 17 years). The postoperative follow-up period was (15.4±3.4) months (1 to 2 years), and all fascia flaps survived without any severe complications. There were no statistically significant differences between the two groups in terms of age difference, length of hospital stay, intraoperative blood loss, postoperative satisfaction, sex composition ratio, and postoperative complications ( P>0.05). The scar quality in the endoscopy group was superior to that in the open surgery group, and POSAS scores of endoscopic group were lower than those in the open surgery group, and the difference was statistically significant ( P<0.05). Conclusion:Endoscope assisted temporoparietal fascia flap harvest for the second-stage operation in auricular reconstruction of Nagata’s technique for microtia can minimize scarring, improve the postoperative appearance and is not statistically associated with the appearance of reconstructed auricles or complications.

With the improvement of sanitation, the infection rate of hookworm is greatly reduced and the severe infected case is rarely reported. Combined morphological and molecular biological examinations, a severe hookworm infection patient was diagnosed in Department of Laboratorial Examination, Quanzhou First Affiliated Hospital of Fujian Medical University. The morphological methods such as direct fecal smear microscopy, saturated brine flotation and hookworm larvae culture methods were used to identify the eggs and larvae from stool samples of the patient. There were a large number of hookworm eggs in patient's stool samples, and the average count was 60 840 per gram by modified Kato method, which belonged to severe hookworm infection. Meanwhile, to distinguish the hookworm species, the semi-nested RT-PCR assay was employed to detect hookworm internal transcribed spacer series from eggs in patient's stool samples, and the result showed that the hookworm species was confirmed to be Necator americanus.
Ancylostomatoidea/genetics* ; Animals ; Feces ; Hookworm Infections/diagnosis* ; Humans ; Necator americanus/genetics* ; Polymerase Chain Reaction

Objective:To compare the short-term outcomes of femoral neck system (FNS) and dynamic hip screw (DHS) in the treatment of femoral neck fractures.Methods:A retrospective analysis was performed of the 105 patients with fresh femoral neck fracture who had been treated by FNS fixation from September 2019 to October 2020 or by DHS fixation from January 2018 to October 2020 at Department of Orthopaedics, The Third Hospital Affiliated to Peking University. In the FNS group of 54 cases, there were 18 males and 36 females with a mean age of (60.7±15.2) years; in the DHS group of 51 cases, there were 14 males and 37 females with a mean age of (63.3±13.2) years. The 2 groups were compared in terms of hospital stay, operation time, intraoperative blood loss, incision length, intraoperative fluoroscopy frequency, qualify of reduction, and femoral neck shortening length, Harris hip score and complications at the last follow-up.Results:The 2 groups were comparable due to insignificant differences in their preoperative general data or follow-up time ( P>0.05). In the FNS group, the median operation time [45.0 (40.0, 59.0) min], intraoperative blood loss [30.0 (20.0, 50.0) mL], incision length [4.0 (4.0, 5.0) cm], intraoperative fluoroscopy frequency [10.5 (9.0, 12.0) times] and hospital stay [2.0 (2.0, 4.0) d] were significantly superior to those in the DHS group [72.0 (55.0, 89.0) min, 50.0 (30.0, 50.0) mL, 7.0 (6.0, 8.0) cm, 18.0 (15.0, 19.0) times, and 3.0 (3.0, 6.0) d] (all P<0.05). There were no statistical differences between the 2 groups in quality of reduction, length of femoral neck shortening, failure rate of internal fixation or Harris hip score at the last follow-up ( P>0.05). There were no such surgical complications as deep infection or femoral head necrosis in either of the 2 groups. Conclusions:In the fixation of femoral neck fractures, both FNS and DHS may lead to fine short-term outcomes. However, compared with DHS, FNS exhibits advantages of simplicity, minimal invasion, less surgical trauma and intraoperative fluoroscopy frequency, and reduced operation time and hospital stay.

Objective:To determine the median effective dose (ED 50) of 0.5% ropivacaine when combined with dexmedetomidine based on femoral nerve cross-sectional area for ultrasound-guided femoral nerve block. Methods:American Society of Anesthesiologists physical statusⅠor Ⅱ patients of both sexes, aged 18-64 yr, with body mass index of 20-30 kg/m 2, scheduled for elective open reduction and internal fixation for patella fracture or removal of patella fracture by internal fixation, were randomly divided into dexmedetomidine and ropivacaine group (group DR) and ropivacaine group (group R). In group DR, 0.5% ropivacaine and 0.5 μg/kg dexmedetomidine were injected.In group R, 0.5% ropivacaine was injected.Ultrasonic localization of femoral nerve was performed for measurement of the femoral nerve cross-sectional area, and 0.5% ropivacaine was injected based on the area.ED 50 was determined by Dixon′ s up-and-down sequential method.The initial dose was 0.22 ml/mm 2, and the difference between the two successive doses was 0.02 ml/mm 2.The effective block was defined as complete loss of pain sensation in the areas of anterior skin of knee joint, skin on the inner side of the calf and dorsal medial skin of the foot and the degree of motor block was in stages 1-3 assessed using Brunnstrom motor function within 30 min after nerve block.Nerve block was considered ineffective if pain occurred in any nerve distribution area mentioned above.The study was terminated if 7 effective and ineffective alternating waves occurred.ED 50 and 95% confidence interval (CI) were calculated using Probit analysis. Results:In group R, 27 patients were enrolled in the study, and ED 50 (95%CI) of 0.5% ropivacaine for ultrasound-guided femoral nerve block was 0.106 (0.069-0.125) ml/mm 2.In group DR, 23 patients were enrolled in the study, and ED 50 (95% CI) of 0.5% ropivacaine for ultrasound-guided femoral nerve block was 0.038 (0.011-0.059) ml/mm 2.Compared with group R, ED 50 of 0.5% ropivacaine for femoral nerve block was significantly decreased in group R. Conclusion:When combined with dexmedetomidine 0.5 μg/kg, ED 50 of 0.5% ropivacaine based on femoral nerve cross-sectional area for ultrasound-guided femoral nerve block is 0.038 ml/mm 2.